the melown2015, which covers not only the Earth from Equator to cca 85° on
the North and South, but also the polar caps. Since Bing maps do have
generated tiles from zoom level 1 (when compared to e.g. Google, which starts
with 0), the lodRange is to be defined between 2-21.

the webmerc-projected, which shows the “flat” map (famous
Google-Mercator projection). In this case, the LOD range is set between
[0,21]